21161735

素因数分解:

$5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{20849}}^1$

素因数の和:20890

約数の個数: 16

約数和(自身を含む): 30024000

約数和(自身を除く): 8862265

約数列:

[1, 5, 7, 29, 35, 145, 203, 1015, 20849, 104245, 145943, 604621, 729715, 3023105, 4232347, 21161735]

約数ペア:

[(1, 21161735), (5, 4232347), (7, 3023105), (29, 729715), (35, 604621), (145, 145943), (203, 104245), (1015, 20849)]